Heat dissipating assembly

ABSTRACT

A heat dissipating assembly includes a heat exchanger and a base. The heat exchanger defines at least one latching slot. A touching piece is surrounded the latching slot. The base includes at least one latching post. The touching piece is resiliently deformable to engage the at least one latching post in the at least one latching slot. The touching piece abuts the at least one latching post.

BACKGROUND

1. Technical Field

The present disclosure relates to heat dissipating assemblies, and particularly to a heat dissipating assembly with a heat exchanger.

2. Description of Related Art

Electronic devices generate heat during operation. Electronic components in electronic devices may overheat and become damaged if the heat is not dissipated quickly. Fans and heat exchangers are used to draw heat away from the electronic components. Generally, a heat exchanger includes a base adhered to an electronic component (such as CPU) and a plurality of fins extending from the base. The plurality of fins are perpendicularly formed from the base which may increase cost.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the embodiments can be better understood with references to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.

FIG. 1 is an assembled, isometric view of an embodiment of a heat dissipating assembly.

FIG. 2 is an exploded, isometric view of FIG. 1.

FIG. 3 is an isometric view of a heat exchanger of FIG. 2.

FIG. 4 is an enlarged view of a circled portion IV of FIG. 3.

FIG. 5 is an exploded view of a first fin and a second fin of FIG. 3.

DETAILED DESCRIPTION

The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one.

FIGS. 1 and 2 show a heat dissipating assembly in accordance with an embodiment. The heat dissipating assembly includes two seats 10, a base 20, a heat exchanger 30, and two pipes 50.

The two seats 10 are secured to a motherboard (not shown). Each of the two seats 10 includes a supporting portion 11 and two securing tabs 13, extending from two opposite ends of the supporting portion 11. The supporting portion 11 defines two positioning holes 111 corresponding to the base 20. Four securing members 15 are located on each securing tab 13, to secure the two seats 10 to the motherboard.

The base 20 includes a board 21. Three elongated latching posts 23 protruding from an upper surface of the board 21. The three latching posts 23 are parallel to each other, to engage with the heat exchanger 30. Each of the three latching posts 23 has a first extending direction, and each of the first extending directions are parallel to each other. Each of the three latching posts 23 includes a neck portion 231 and a head portion 233, connected to the neck portion 231. A size of the head portion 233 is greater than a size of the neck portion 231. The board 21 defines four installation holes 211 corresponding to the two positioning holes of each of the two seats 10. Two receiving slots 25 are defined in the board 21, for receiving the two pipes 50. The two receiving slots 25 are positioned in a lower portion of the board 21 and parallel to each other.

Referring to FIGS. 4-5, the heat exchanger 30 includes a first fin 31 and a plurality of parallel second fins 33. Each of the first fins 31 and the second fins 33 includes a fin body 311, a first flange 313, and a second flange 314. The first flange 313 and the second flange 314 extend from two opposite edges of the fin body 311. The first flange 313 and the second flange 314 are substantially parallel to each other and perpendicular to the fin body 311. The fin body 311 defines three latching slots 315 extending to the first flange 313, corresponding to the three latching posts 23. Each of the latching slots 315 includes a narrow portion 3151 and a wide portion 3153, in communication with the narrow portion 3151. A size of the wide portion 3153 is greater than a size of the narrow portion 3151, but it is smaller than the size of the head portion 233. A touching piece 316 (shown in FIG. 5), surrounding each latching slot 315, is located on the fin body 311. The touching piece 316 connects to the first flange 313. Each of the first flange 313 and the second flange 314 defines two cutouts 3131 extending to the fin body 311. Two engaging portions 331 are located on each of the first flange 313 and the second flange 314 of each second fin 33. Each engaging portion 331 is positioned in front of each cutout 3131. In one embodiment, each engaging portion 331 is made of plastic.

Each of the two pipes 50 includes a heat conducting portion 51, a heat dissipating portion 53, and a connecting portion 55, connecting the heat conducting portion 51 with the heat dissipating portion 53. The heat dissipating portion 53 is inserted into the heat exchanger 30, and the heat conducting portion 51 is received in each receiving slot 25.

FIGS. 1 and 3 show that in assembly, each engaging portion 331 of one of the second fins 33 is engaged into each cutout 3131 of the first fin 31, to secure the one of the second fins 33 to the first fin 31. The other of the second fins 33 are connected one by one using the same way. The heat exchanger 30 is thereby assembled. The first fin 31 and the plurality of second fins 33 cooperatively define three elongated latching slots 315 corresponding to the three latching post 23. Each of the three latching slots 315 has a second extending direction, and the second extending directions are parallel to each other and parallel to the first extending direction.

The base 20 is secured to the two seats 10 via four locking members 40. The heat exchanger 30 is moved towards the base 20. Each head portion 233 of the three latching posts 23 is inserted into each narrow portion 3151 to deform the fin body 311, until the head portion 233 is engaged into the wide portion 3153. The fin body 311 resiliently rebounds to engage the touching piece 316 with each neck portion 231, to secure the heat exchanger 30 to the base 20. The touching piece 316 abuts the corresponding latching post 23 in a direction substantially perpendicular to the extending direction, to dissipating heat from the base 20. The first flange 313 of the heat exchanger 30 abuts the board 21 of the base 20.

In disassembly, the heat exchanger 30 is pulled away from the base 20. The touching piece 316 is resiliently deformable to disengage the head portion 233 from the latching slot 315, to detach the heat exchanger 30.

It is to be understood, however, that even though numerous characteristics and advantages of the embodiments have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in detail, especially in the matters of shape, size, and arrangement of parts within the principles of the embodiments to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed. 

What is claimed is:
 1. A heat dissipating assembly, comprising: a base comprising at least one latching post; and a heat exchanger defining at least one latching slot, a touching piece surrounding the at least one latching slot; wherein the touching piece is resiliently deformable to engage the at least one latching post in the at least one latching slot, and the touching piece abuts the at least one latching post.
 2. The heat dissipating assembly of claim 1, wherein the heat exchanger comprises a first fin and a plurality of second fins, the first fin defines a cutout, an engaging portion extends from each of the plurality of second fins, and one of the plurality of second fins is elastically engaged in the cutout to secure the one of the plurality of second fins to the first fin.
 3. The heat dissipating assembly of claim 2, wherein each of the plurality of second fins defines a cutout, the cutout of one of the plurality of second fins receives the engaging portion of adjacent second fin, to secure two adjacent second fins together.
 4. The heat dissipating assembly of claim 1, wherein the at least one latching post comprises a head portion and a neck portion connected to the head portion, the latching slot comprises a wide portion and a narrow portion that is in communication with the wide portion, the head portion is engaged in the wide portion, and the neck portion is engaged in the narrow portion.
 5. The heat dissipating assembly of claim 4, wherein a size of the head portion is greater than a size of the neck portion.
 6. The heat dissipating assembly of claim 5, wherein a size of the wide portion is greater than a size of the narrow portion, and the size of the head portion is greater than the size of the wide portion.
 7. The heat dissipating assembly of claim 2, wherein the base further comprising a board, each of the first fin and the plurality of second fins comprising a flange, and the flange abuts the board.
 8. The heat dissipating assembly of claim 1, wherein the at least one latching post comprises three latching posts, and each of the three latching posts has a first extending direction, and the first extending directions are parallel to each other.
 9. The heat dissipating assembly of claim 1, wherein the at least one latching slot comprises three latching slots, each of the three latching slots has a second extending direction, and the second extending directions are parallel to each other.
 10. A heat dissipating assembly, comprising: a heat exchanger defining at least one latching slot; the at least one latching slot comprises a narrow portion and a wide portion communication with the wide portion, a touching piece surrounding the at least one latching slot; and a base comprising at least one latching post, the at least one latching post comprises a head portion and neck portion connected to the head portion; the head portion extends through the narrow portion to be engaged in the wide portion, and the neck portion is engaged in the narrow portion, to secure the at least one latching slot to secure the heat exchanger to the base; and the touching piece abuts the at least one latching slot.
 11. The heat dissipating assembly of claim 10, wherein the heat exchanger comprising a first fin and a plurality of second fins, the first fin defines a cutout, an engaging portion extends from each of the plurality of second fins, and one of the plurality of second fins is elastically engaged in the cutout to secure the one of the plurality of second fins to the first fin.
 12. The heat dissipating assembly of claim 11, wherein each of the plurality of second fins defines a cutout, the cutout of one of the second fins receives the engaging portion of adjacent second fin, to secure two adjacent second fins together.
 13. The heat dissipating assembly of claim 10, wherein a size of the head portion is greater than a size of the neck portion.
 14. The heat dissipating assembly of claim 13, wherein a size of the wide portion is greater than a size of the narrow portion, and the size of the head portion is greater than the size of the wide portion.
 15. The heat dissipating assembly of claim 11, wherein the base further comprises a board, each of the first fin and the plurality of second fins comprising a flange, and the flange abuts the board.
 16. The heat dissipating assembly of claim 10, wherein the at least one latching post comprises three latching posts, and each of the three latching posts has a first extending direction, and the first extending directions are parallel to each other.
 17. The heat dissipating assembly of claim 10, wherein the at least one latching slot comprises three latching slots, each of the three latching slots has a second extending direction, and the second extending directions are parallel to each other. 